William Pène du Bois won the John Newbery Medal for Newbery Medal in 1948 for The Twenty-One Balloons.
| Year | Contest | Category | For | Sources |
|---|---|---|---|---|
| 1948 | John Newbery Medal | Newbery Medal | The Twenty-One Balloons | 1 · 2 |
William Pène du Bois won the John Newbery Medal for Newbery Medal in 1948 for The Twenty-One Balloons.
| Year | Contest | Category | For | Sources |
|---|---|---|---|---|
| 1948 | John Newbery Medal | Newbery Medal | The Twenty-One Balloons | 1 · 2 |